Loom



H. SIGEL LOOM June 29, 1 93 7.

Filed March 18, 1936 lNVE TQR ATTO RNEY5 Patented June 29 I937 UNITEDSTATES PATENT oFFicE LOOM Application March 18, 1936, Serial No. 69,442In Germany March 23, 1935 2 Claims. (Cl. 139-191) This invention isconcerned with looms which are provided with a divided or two-part reedand has been developed in connection with ribbon looms of that type. Insuch looms there is commonly provided a fixed shuttle guide and theshuttle travels between the reed and the heddles. Because of therelatively slight friction of the two-part reed on the warp threads suchlooms as heretofore constructed can be operated at great speed, even ashigh as 1000 picks per minute, but because the two-part reed in suchlooms has only .a swinging movement upward and downward heavy fabric, inwhich the weft thread must be strongly beaten, cannot be produced.

This disadvantage of looms provided with a the Weft thread is stronglybeaten in. A loom provided with a two-part reed, which not only has theupward and downward swinging movement as heretofore but has imparted toit an additional beating movement in accordance with the presentinvention, is capable of a high output of heavy fabric.

The invention will be more fully explained hereinafter with reference tothe accompanying drawing in which several embodiments are illustrated,and in which:

Figure 1 is a. view, diagrammatic and partly in section on a planeindicated by the line of I---! of Figure 2, of so much of a loomequipped with the present invention as is necessary to enable theapplication of the invention thereto to be understood.

Figure 2 is a plan view, partly in horizontal section, of some of theparts shown in Figure 1.

Figure 3 is a detail view, in vertical section on a larger scale, ofsome of the parts to be referred to.

Figures 4 and 5 are partial views, similar to Figure l, but showingdifferent embodiments of the invention.

In the embodiment of the invention illustrated in Figures 1, 2 and 3 theheddles by which the warp threads 2-2 are moved to form the shed areshown at I, l 7

The two-part or divided reed is shown as consisting of an upper part 3and a lower part 3 the two parts being mounted upon a common carrier 4and opposed and offset somewhat with respect to each other to formbetween them a 55 narrow space, as at [9, to permit the placing ,of theweft thread as hereinafter explained, the

parts of the reed being always in engagement with the warp threads of,both sides of the shed. The reed carrier 4 is mounted to swing upwardand downward upon a spindle 5 and has an arm it which is slotted at itslower end, as at H, to receive adjustably a pin roller [6 which engagesa cam groove E5 in the cam member i4 mounted on a shaft [3, suitablysupported in the loomvframe 6 and rotated by any suitable means.

The spindle 5 is carried by two arms 26 on a sleeve 2d which is mountedon a spindle 25 supported in the loom frame. An arm 23 extended downwardfrom the sleeve M has at its lower end a slot 22 to receive adjustably apin roller 2| which bears on the outer cam surface 20 which is formed onthe cam member in which the cam groove i5 is also formed. A spring 28,seated in the loom frame, as at 21, and centered upon a pin 29 on thearm 23, serves to press the pin roller 2! upon the cam surface 20whereby, due to the conjoint action of the cam surface and the spring28, the spindle 5 is swung to and fro in a substantially horizontaldirection. The reed carrier 4 and two-part reed 3, 3 therefor have a toand fro movement in a substantially horizontal direction and the reedassumes the different positions indicated in Figure 3 by broken lines.

In the construction illustrated there is supported in the loom frame 6,as shown in Figure 2,

a curved shuttle guide in which moves the shuttle carrier 8 on which ismounted the weft bobbin lll. The shuttle carrier is actuated in theusual manner by devices which form no part of the present invention andneed not be shown or described herein. In the movement of the shuttlethe shuttle bill ll lays the weft thread l2 between the warp threads 2which form the shed, the weft thread in the movement of the shuttlepassing through the space H! between the two parts of the reed.

In the operation of the device shown in Figures 1, 2 and 3, as theshuttle carrier 8 and shuttle 9 are moved with the bobbin I0 through theshed the shuttle bill ll lays the weft thread I2 behind the lower part 3of the reed, so that the weft thread assumes the position indicated atI2 in Figure 3. In the then ensuing downward movement of the reed 3, 3effected by the cam groove [5 as described above, the weft thread slidesthrough the gap i9. In the then ensuing upward movement of the reed theweft thread assumes a position in front of the lower part 3 of the reedand movement as before.

at this moment the frame consisting of the arms 23, 26 is swung in aclockwise direction, as shown in Figure 1, by means of the cam surface20, so that the reed moves to the right and the weft thread is beaten orpressed firmly by the lower part 3 of the reed into the positionindicated at I2 in Figure 3. In the continued movement of the cam memberM the reed is again moved to the left, as shown by the dotted lines inFigure 3. It will be understood that the shape of the cam groove I5 andthe shape of the cam surface can be varied to produce such movement ofthe reed as may be required in the production of the fabric being woven.

In the embodiment of the invention illustrated in Figure 4 the carrierfor the divided reed 3|,

3| generally similar to the reed carrier 4 of V on which the reedcarrier is mounted is itself carried by a horizontally movable slide 3'1which is mounted in a guide 38 and is formedwith a rack 40 forengagement by a toothed sector 4|. The latter is mounted on a spindle 42and has an arm 43 which carries a roller 44 bearing on the cam surface46 of the cam member 36. A spring 45serves to press the roller 44 uponthe cam surface 46. V

In the operation of the devices shown in Figure 4 the reed carrier 30 isswung upward and downward through the coaction of the arm 32 and the camgroove 34 and the reed 3|, 3| thereby has imparted to it the upward anddownward The toothed sector 4| and the arm 43 are caused by the camsurface 46 ,with the cooperation of the spring 45 to swing on thespindle 42, so that the slide 31 receives a to and fro movement in ahorizontal direction,

effected positively. The carrier 41 for the reed 48, 4|! swings upon thespindle 49 and has an arm 50 with the pin roller 5| which engages thecam groove 52 of the cam member 54. The

spindle 49 on which the reed carrier swings is supported by an arm 55 ofa bell crank lever 55,

56, which is itself mounted on a spindle 5B supported by the loomhousing 51. The arm 56 carries a pin roller 59 which engages a camgroove 6|] in the cam member 54.

The operation of the embodiments of the invention shown in Figures 4 and5 will be understood without further description. I

Various changes in details of construction and arrangement can be madeto suit different conditions of use and the invention therefore is notrestricted to the particular embodiments shown in the drawing, except aspointed out in the accompanying claims.

I claim as my invention:

1. In a loom, the combination of a divided reed, the two parts of whichare opposed to each other and are offset to permit the placing of theweft thread between them, a reed carrier mounted to swing on ahorizontal axis and on which both parts of the reed are mounted forconstant engagement with the warp threads of both sides of the shed, amovable support for the axis of the carrier, an actuating arm in fixedrelation with the carrier, an actuating arm in operative relation withthe support, and a cam member having two separate cam surfaces, theactuating arm of the carrier being in operative engagement with one ofthe cam surfaces of the cam member and the actuating arm of the supportbeing in operative engagement with the other cam surface of the cammember.

2. In a loom, the combination of a divided reed, the two parts of whichare opposed to each other and are offset to permit the placing of theweft thread between them, a reed carrier mounted to K swing on ahorizontal axis and on which both parts of the reed are mounted forconstant engagement with the warp threads of both sides of the shed, asupport on which the carrier is mounted and which is itself mounted toswing on a horizontal axis, an actuating arm in fixed relation with thecarrier, an actuating arm in operative relation with the support, and acam member having two separate cam surfaces, the actuating arm of thecarrier being in operative engagement with one of the cam surfaces ofthe cam member and the actuating arm of the support being in operativeengagement with the other cam surface of the cam member.

' HERMANN SIGEL.

